Active clinical trials for "Hemostatic Disorders"

Aim of the study The investigators aim to establish: Whether noradrenaline (NA) infusion has a significant effect on coagulation and fibrinolysis in patients with severe traumatic brain injury (TBI). Whether disruption of haemostasis can be recorded with a computerized tomography (CT) scan. Whether there is a significant difference between the values of haemostasis parameters in the internal jugular vein and the radialis artery. The hypotheses In the early stage of treatment (1-3 hours), an increased formation of thrombin occurs in patients with severe isolated TBI that are treated with NA; consequently, platelet use increases in comparison with patients who don't need NA, as do coagulation factors and hyperfibrinolysis. The concentration of NA correlates with thrombin formation and the correlation is stronger in higher doses of NA. Thrombin formation will decrease more slowly in the group that will receive NA therapy in comparison to the group that will not receive NA therapy.

Rotational thromboelastometry (ROTEM) is reliable point of care management of coagulation disorder undergoing surgery. Recently, there are some reports about prediction of perioperative bleeding using ROTEM. But, the effectiveness of ROTEM for predict bleeding and improve outcomes is still debate. In this retrospective study, the investigators will compare immediate postoperative bleeding with ROTEM parameters using a Gray zone approach, and access the reliability of ROTEM for prediction of bleeding after cardiac surgery.

The purpose of this study is to observe the relationship between the level of lipid peroxidation products in serum of patients with traumatic brain injury and secondary coagulation disorders.

The objective of the present study is to assess blood coagulation disorders in patients with Pulmonary Arterial Hypertension and Chronic Thromboembolic Pulmonary Hypertension. The investigators aim to evaluate any possible coagulation abnormalities related to the patients' primary disease and any possible effects the pulmonary hypertension- specific therapy may have on hemostasis.

Massive hemorrhage is a major cause of potentially preventable death following trauma. A common consequence of hemorrhagic shock is uncontrollable bleeding from coagulopathy, leading to death from exsanguination. Even when bleeding is controlled, patients are at increased risk of complications and mortality. Reconstituted whole blood, or component therapy with packed red blood cells (PRBCs), plasma, and platelets was introduced by the military in recent conflicts in Iraq and Afghanistan with remarkable results and has been adopted by most civilian trauma centers. Despite improving coagulopathy, it is apparent that transfusion of blood components is not equivalent to whole blood transfusion. Transfusion of high plasma volumes may be associated with increased risk of allergic reaction, transfusion associated acute lung injury (TRALI), hypervolemic cardiac failure, and acute respiratory distress syndrome (ARDS). Military services have recently reintroduced fresh whole blood (WB) for standard resuscitation of massive hemorrhage, have found that WB offers a survival advantage over component therapy, and that risks of transfusion reactions are similar for WB and PRBCs. On the civilian side, whole blood is an FDA-licensed product that has been in use in pediatric open heart surgery and autologous blood donation but is no longer commonly available for other indications. However, the military results are renewing interest in whole blood for trauma resuscitation. The use of low-antibody titer whole blood leukoreduced with a platelet-sparing filter was recently approved by the University of California Los Angeles Blood and Blood Derivatives Committee and two other trauma centers for male trauma patients. This study will test the feasibility of providing stored WB for resuscitation of patients in hemorrhagic shock and determine the effects of WB on clinical outcomes as well as the effects on coagulation, fibrinolysis, and inflammation, compared to standard blood component therapy.

Trauma is a leading cause of death among people younger than 44 years. Five million people worldwide die from trauma annually. Uncontrolled haemorrhage causing traumatic-haemorrhagic shock (THS) is the leading cause of potentially preventable deaths from severe trauma. Uncorrected hypervolaemia and prolonged shock cause severe tissue hypoperfusion, vital organ ischemia and subsequently acidosis. In up to one third of trauma patients, laboratory findings suggest traumatic induced coagulopathy, which is further triggered by loss or dilution of coagulation factors. These patients have a significantly increased morbidity and mortality compared to patients with similar injury patterns without coagulopathy. Minimizing the time to surgical control of haemorrhage is key in order to improve outcome. However, immediate and goal directed volume and coagulation resuscitation including use of blood transfusion is crucial to enable survival until definitive hospital care. The primary objective of this study will be to evaluate feasibility of prehospital administration of 1 unit of human plasma and 1 unit of red blood cells, and explore association of early prehospital transfusion with early outcomes in patients presenting with THS, severe bleeding or peri-arrest state who are matching indication criteria and are transported by Helicopter Emergency Medical Service. Results of clinical examinations and laboratory variables in a group of patients receiving prehospital transfusion will be compared to matched population of patients treated before blood has been available on board. Secondary aim of the study is to detect any potential logistical and/or organisational adverse effects, incl. cost-effectiveness, in a regional trauma system with prehospital times (time of injury to trauma centre) ranging from 45 to 75 minutes.

Cardiopulmonary bypass (CPB) is a unique clinical scenario that results in widespread activation of the hemostatic system. Conventional CPB interferes with normal hemostasis by diluting hemostatic cells and proteins, through reinfusion of shed blood, and through activation on the bypass circuit surface of multiple systems including platelets, the kallikrein-kinin system, and fibrinolysis . Besides, deleterious effects of cardiopulmonary bypass (CPB) are partly sequelae of blood-foreign surface reactions. The arterial filter is the part of the CPB circuit where blood cells are exposed to high mechanical stress and where cellular aggregates may fasten in large quantitiesiec.

Prospective observational study in which FXIII levels and coagulation tests and cicatrization are measured during the 30 days after the thermal trauma.

ACLF and cirrhotic patient have deranged coagulation parameters and this coagulation parameters altered when this group of patients undergoing dialysis because of renal failure. this group of patients is also high risk of sepsis. Most common organ involved during sepsis leading to organ failure is renal. So, all this cascade increases the risk of bleeding as well as coagulation failure. Currently there are no studies evaluation the coagulation status in patients with cirrhosis undergoing dialysis. Further there are no studies evaluating the utility of these global tests of coagulation as a guide to judicious blood transfusion in these patients to prevent bleeding. Further there are no studies comparing the two different modalities of assessment.

to assess the incidence of coagulation disorders in IBD patients in comparison with another normal controlled group risk factors that contribute to development of thrombosis in IBD patients to determine the effectiveness of prophlactive anticoagulant measures to determine the association between disease activity and coagulation parameters